Brake



W. H. TAPE oct. 1s, 1927.

BRAKE Filed Sept. 30. 1925 f INVENTOR. WILUAM HENRYTAPE BY @miATTORNEYS.

Patented Oct. 18, 1927. I

UNITED STATES 1,645,975' PATENT oFFlcE.

'WILLIAM HENRY TAPE, 0E LETHBRIDGE, ALBERTA, CANADA, ASSIGNOB 0FONE-HALF T ROBERT BARROWMAN, 0F LETHBRIDGE, CANADA.

BRAKE.

Application led September 30, 1925. Serial No. 59,511.

The present invention relates to improvements in brakes, particularldesigned for motor vehicles, and its partlcular object is to provide abrake that is very simple in construction and very effective, allowingthe driverto set the brake with a minumum of effect and furthermorebeing so constructed as to be easily taken apart andre-assembled for thepurpose of repair. A

It is particularly proposed in this present invention to utilize axiallmovable elements for effecting braking action and to apply a worm orthread for imparting this motion. Further features and advantages of myinvention will appear'as the specification proceeds.

The preferred form of my invention is illustrated in the accompanyingdrawing in which Figure 1 shows an axial section through my brakemechanism,

Figure 2 a detail view of a disc element used in my brake mechanism, and

Figure 3 a detail view of a friction ring forming partof my device.

While -I have shown only the preferred form of the invention it shouldbe understood that various changes and modifications may be made withinthe scope of the claims hereto attached without departing from thespirit of the'invention. I

- The brake drum 1 which maybe of conventional form is secured by meansof bolts 2 and nuts 3 to the wheel 4, which latter ;5' revolves through4bearings 6 on the axle housing 7 and is actuated by means of the axleshaft 8 keyed to the hub 9 of the wheel.

A disc 11 provided with a hub portion 12 is fixed relativeto the axlehousing so as to l 0 confront the open end of the brake drum. A ring 13is axlally slidable within the brake drum and keyed to the latter asshown at 14 so as -to partake of its revolving motion. The ring isprovided with an inturned flange 5 16 and with brake lining 17 onopposite sidesthereof which brake lining may be riveted to the ring asshown at 18.

A second disc 19 is" slidable on the axle housing 7 and5keyed thereto asshown at 0 21 so as to be held against rotation, 'the disc being formedwith a substantial hub 22. A rod 23 extends transversely through the huby the rod 23 andl extending up' to the inner face of the disc 11 so asto prevent inward axial motion of the rod 23. Outward axial motion isprevented by a collar 24 secured thereto by set screw 25 and bearing onthe outer face of the hub 12. The rod 23 may be operated from thedrivers seat in any suitable manner as for instance by means of thelongitudinal rod 26 pivotally engaging an arm 27 secured to the rod 23.

The operation of my device will be readily understood from the foregoingdescription. The rod 23 is held against endwise motion byQthe collar 24and the threaded bearing on the hub 12 of the disc 11 from oppositesides. VVhen-the rod is revolved c ockwise the disc 19 is drawn inwardlyand forces the ring 13 upon the disc 11 whereby further rotation of thering 13 and of the brake drum connected therewith is opposed.

One of the discs `11 or 19 is preferably provided with an internal hub28 serving as a spacing member for the two discs, the hub beingsufficiently heavy to prevent a closing in of the two discs on the ring13 after the 4brake lining 17 is worn out.

I claim:

1. A brake mechanism comprising a .vehicle wheel having a brake drumfixed relative thereto, an axle housing having a disc xed relativethereto to confront the open end of the brake drum, a ring held to thebrake drum and\axially slidable therein, so as to confront the disc, asecond disc held to the axle housing with freedom of axial motion anddisposed on the opposite side of the ring and a rod held in the firstdisc agaiiist enda wise motion and threaded into the second disc so asto limpart endwise motion to the latter when revolved for forcing thetwo upon the ring or for releasing their 2. A brake drum, as defined inclaim 1, in4

which the two discs are provided with large hub ort-ions and in whichthe rod engages the iscs at the said hubfportions.

3. A brake drum, as defined in claim 1, in which the ring engages thebrake drum at the periphery and in which the roden-` gages the two discsat enlarged` hub portions thereof.

4. A brake mechanism comprising a brake of the disc 11 yand is threadedinto the hub ,'drum including aweb and aflange, two spaced v 22 of thedisc 19, the threaded rtio'n being s larger in diameter than the plainportion of non-revolvingelements axially alined thereweb, a frictionmember revolvable with the 5. A brake mechanism as defined in claimbrake drum and extendin into the space 4 in which the two non-revolvingelements l0- between the two non-revolving elements and are providedwith large hub port1ons andin a rod held against endwise motion in oneof which the rod engages the said elements the elements and threadedinto the other abaxially and at the hub portions.

and allowing frictional engagement to be In testimony whereof I aix mysignature. established between the friction member and two elements.WILLIAM HENRY TAPE.

